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Simple Mail Transfer Protocols (SMTP)
The application layer protocols for electronic mail is SMTP( Simple mail transfer protocols).
Internet electronic mail has many components including mail services that house user mailboxes mail readers that allow users to read and write messages a standard for defining the structure of an e mail message and application layer protocols. Thais define how messages are passed between servers, how message are passed between servers and mail readers, and how the contents of certain parts of the mail message ( for example a mail message header) are to be interpreted.
What are the important topologies for networks? BUS topology: In this every computer is directly linked to primary network cable in a single line. Advantages: Inexpensive,
Interdepences of workstation hardware and software
Hardware Cost It indicates to the cost concerned in the functioning of an interconnection network. It comprises the cost of arbiter unit, connectors, switches, interface logic
Q Illustrate Unipolar line coding? - Simplest method is inexpensive - Utilizes only one voltage level - Polarity is habitually assigned to binary 1 a 0 is represented by
Q. Show the Security Policy as well Integrated Security ? Security policy is on paper statement describing what assets are to be protected and why who is responsible and which
The Network layer is used to route physical data to the destination point, it decides the actual path from where data travels to destination point. The network layer supports both
Instruction Pipelines The stream of instructions in instruction execution cycle may be realized by a pipeline where overlapped executions of various operations are performed. T
Switching via an interconnection network The switching techniques overcome the bandwidth limitation of a single shared bus. This technique use a more sophisticated interco
The Common method for writing a program with PVM is as follows: A user writes one or more sequential programs in C, C++, or Fortran 77 having embedded PVM function (or subroutin
Efficiency of a data communications system depends on three fundamental characteristics - Delivery: The system should deliver data to the correct destination. Data should be r
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